Malicious Code Detected in my-fun-tools: A Critical Vulnerability

my-fun-tools Updated 02 Oct 2025

Summary

31/07/2025
CRITICAL
No i
Critical
Not published

MAL-2025-6552: Malicious code in my-fun-tools (PyPI). Affects my-fun-tools versions 0.1.1 – 0.1.2. No fix is published. How to fix ↓

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Background

my-fun-tools is a Python package available on PyPI that offers various utility functions for developers. It is designed to simplify certain programming tasks, making it a popular choice among Python developers. However, the package has been identified to contain malicious code, which poses significant security risks to users who install it.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code in versions 0.1.1 and 0.1.2 of the my-fun-tools package. This code can potentially compromise user systems, leading to unauthorized access or data breaches. The malicious nature of this code was identified by ReversingLabs, highlighting the importance of scrutinizing third-party packages before use.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall my-fun-tools

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

Currently, there are no specific workarounds to mitigate the risks associated with the malicious code in my-fun-tools. The best course of action is to avoid using the affected versions and monitor for updates from the package maintainers.

Conclusion

The discovery of malicious code in the my-fun-tools package underscores the importance of vigilance when using third-party libraries. Users are strongly encouraged to uninstall affected versions and monitor for updates to ensure their systems remain secure.

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FAQ

The malicious code can compromise user systems, potentially leading to unauthorized access or data breaches.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without needing to sign up.

If you have installed my-fun-tools, you should uninstall it immediately using the command: pip uninstall my-fun-tools.

As of now, there is no patched version available. Users are advised to monitor the package for updates.

Regularly monitor your dependencies using tools like Vulert to stay informed about vulnerabilities in open-source packages.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall my-fun-tools

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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